Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 692 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.A town has 14700 people. The population grows by 10% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹57800 at 10% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹48000 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹16100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
6. 6.A town has 42500 people. The population grows by 8% every year. What will the population be after 2 years?
7. 7.A scooter is worth ₹36600. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹46000 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹38400 grow to in 1 year at 4% per year compound interest (in ₹)?
11. 11.A town has 3800 people. The population grows by 25% every year. What will the population be after 1 year?
12. 12.What is the difference between the compound interest and the simple interest on ₹23500 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹44000 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹26400 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹36000 at 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
17. 17.A town has 55900 people. The population grows by 25% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹57200 at 25% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹26000 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹10100 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹53900 at 10% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹4800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
25. 25.What amount will ₹28000 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
28. 28.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.What amount will ₹23000 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹47700 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.A scooter is worth ₹40000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
32. 32.A town has 12800 people. The population grows by 25% every year. What will the population be after 2 years?
33. 33.What amount will ₹17300 grow to in 1 year at 15% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹15600 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹27000 at 10% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹22500 at 20% per year for 3 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹13500 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹54800 grow to in 2 years at 15% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹7800 at 10% per year for 2 years (in ₹)?

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